They were some ruthless bastards without a doubt. I was sinply objecting the over simplified notion that one day the Crusders just up and decided to attack the poor Muslims who were minding their business.
The other point I was trying to make is that the West and the Middle started off on fairly even footing and Islam was slowing left behind as the European society grew in leaps and bounds. As you mentioned these cultures interacted to fair degree why did the Muslims nations get left so far behind? It was not becuase they were colonized.